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<p>This study reports the isolation, characterization, and evaluation of the enzymatic and antimicrobial potential of actinomycetes associated with the marine gastropod <i>Bolinus brandaris</i> collected from the Algerian Mediterranean coast. A total of nine actinomycete strains were isolated using selective media, with ISP2 yielding the highest diversity. Morphological and physiological characterization revealed broad variability in colony morphology, pigmentation, and tolerance to temperature, salinity, and pH, reflecting their adaptability to marine conditions. Enzymatic profiling indicated significant protease, lipase, amylase, and catalase activities, highlighting their potential use in biodegradation, food processing, and pharmaceutical industries. Three isolates (S3, S4, and S5) exhibited strong antimicrobial activity, with isolate S4 showing the largest inhibition zone (34&#xa0;mm) against <i>Pseudomonas aeruginosa</i>. These findings underscore the ecological and biotechnological importance of marine actinomycetes and their promise as sources of novel bioactive metabolites. Future metabolomic and genomic studies are recommended to elucidate the biosynthetic pathways underlying these activities and to support the discovery of new compounds with medical and environmental applications.</p>

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Isolation and antimicrobial potential of actinomycetes associated with the marine gastropod Bolinus brandaris from the Algerian coast

  • 期刊论文

  • 发表日期：

    2026年1月13日

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  • Hana Bouzahouane,
  • Adel Ayari,
  • Moundji Touarfia,
  • Fateh Sedrati

摘要

This study reports the isolation, characterization, and evaluation of the enzymatic and antimicrobial potential of actinomycetes associated with the marine gastropod Bolinus brandaris collected from the Algerian Mediterranean coast. A total of nine actinomycete strains were isolated using selective media, with ISP2 yielding the highest diversity. Morphological and physiological characterization revealed broad variability in colony morphology, pigmentation, and tolerance to temperature, salinity, and pH, reflecting their adaptability to marine conditions. Enzymatic profiling indicated significant protease, lipase, amylase, and catalase activities, highlighting their potential use in biodegradation, food processing, and pharmaceutical industries. Three isolates (S3, S4, and S5) exhibited strong antimicrobial activity, with isolate S4 showing the largest inhibition zone (34 mm) against Pseudomonas aeruginosa. These findings underscore the ecological and biotechnological importance of marine actinomycetes and their promise as sources of novel bioactive metabolites. Future metabolomic and genomic studies are recommended to elucidate the biosynthetic pathways underlying these activities and to support the discovery of new compounds with medical and environmental applications.